CN101786150B - Die casting machine and automatic judgment method of die casting quality - Google Patents
Die casting machine and automatic judgment method of die casting quality Download PDFInfo
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- CN101786150B CN101786150B CN 201010113764 CN201010113764A CN101786150B CN 101786150 B CN101786150 B CN 101786150B CN 201010113764 CN201010113764 CN 201010113764 CN 201010113764 A CN201010113764 A CN 201010113764A CN 101786150 B CN101786150 B CN 101786150B
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Abstract
The invention relates to a die casting machine and an automatic judgment method of die casting quality. The die casting machine comprises an injection oil cylinder provided with a pressure sensor and an injection position detecting read head, wherein the pressure sensor and the injection position detecting read head are connected with a curvometer. The injection process of the die casting machine has six characteristic values, namely low-speed injection speed, high-speed injection speed, position where low-speed is changed to high-speed, maximal speed, maximal pressure and pressurization set-up time. The method for detecting the current six characteristic values comprises the following steps: 1. setting the curvometer to obtain the sampling time, standard value of the characteristic values, collecting time, offset value and product sampling inspection rate; 2. using the curvometer and the pressure and position sensors to collect the injection pressure and injection position data during injection process; 3. calculating with the data obtained in the step 2 to obtain the injection speed data of the injection process; 4. calculating to extract the current values of the six characteristic values from the pressure, speed and position data in injection process; and 5. comparing the current values obtained in the step 4 with the standard values one by one; and outputting an alarm signal when the current values exceed the defined limits, thus ensuring the quality of workpieces.
Description
Technical field
The present invention relates to the automatic judging method of a kind of die casting machine and die casting workpiece quality.
Background technology
It is material, mould, press, technological parameter, personnel's combination that die casting is produced; The die casting production process is complicated, change point is many, continuity is strong, product lot quantity is big; If can not in time find and correct; Will cause percent defective very high, product quality descends, and seriously influences economic benefit of enterprises.The technological parameter of tradition die casting machine is to carry out analytical test through the actual mass to the die casting sample; The result adjusts repeatedly and confirms according to sampling observation; The adjustment time that needs is long, and technological parameter is that technological factors such as pressure, speed, temperature and time are obtained unified process, if variation has taken place these factors in ordinary production; Will cause the reduction of die casting workpiece quality; Therefore in time find the variation of die-casting technological parameter, production high-quality die casting could be significantly enhanced productivity in adjustment rapidly.
Chinese patent document number CN1857831 discloses a kind of injection device and control method of die casting machine on November 8th, 2006, mainly comprises injection part, hydraulic part, control section.Through the real-time controller that the height response that shot sleeve rod chamber export flow quantity is controlled, big flow choke valve is set and this choke valve is controlled in real time; Use the control method of this invention; Mode so that the oil-in throttling combines with the oil-out throttling is controlled the speed of injection process in real time, can realize the even functions such as slow shot, multistage injection, anti-overlap deceleration of quickening of closed loop control in real time.But this complex structure, its work can not reflect the quality of die casting workpiece, can not adjust timely, causes substandard products in enormous quantities to produce easily.
Summary of the invention
The object of the invention aims to provide a kind of die casting machine and automatic method of judging of die casting workpiece quality that the adjustment and the raising die casting workpiece quality of extrusion process are had very great help, to overcome weak point of the prior art.
A kind of die casting machine by this purpose design comprises the injection oil cylinder that is provided with pressure sensor and injection position probing read head, it is characterized in that pressure sensor is connected with curvometer with injection position probing read head.Curvometer is electrically connected with warning device and display screen.
A kind of automatic judging method of die casting machine die casting workpiece quality; It is characterized in that comprising in the die casting machine injection process injection speed at a slow speed, fast injection speed, change position, maximum speed, maximum pressure, supercharging these 6 characteristic values Time Created fast at a slow speed; Its current data that detects 6 characteristic values comprises following steps: the first step, setting curve appearance are obtained standard value, acquisition time, deviate, the product sampling observation rate of sampling time, characteristic value; In second step,, gather injection pressure and injection position data in the injection process through using curvometer and pressure, position sensor; In the 3rd step, calculate the injection speed data in the injection process by the injection position data in the injection process; In the 4th step, from the pressure of injection process, speed, position data, extract the currency of 6 characteristic values through calculating; The 5th step compared the currency of 6 characteristic values and the standard value of characteristic value one by one, judged whether to exceed deviate; If meet deviate, continue injection, and returned for second step and continue to detect; If exceed deviate, then represent die casting workpiece non-conformity of quality standardization.
The standard value of above-mentioned characteristic value is to obtain through curvometer; When the technologist adjusts parameter; And after confirming that the die casting workpiece satisfies quality requirements, extract the characteristic value of 6 standards, according to the quality requirement of die casting workpiece; Through the setting screen deviate or the sampling observation rate of display screen, foundation as a comparison.
Above-mentioned currency and standard value compare, and when exceeding deviate, send quality through warning device and report to the police.
The currency that above-mentioned accumulative total is stored characteristic value in the injection process forms database, is that curve obtains the probability distribution data with the method that adopts statistics through screen display, is used for instructing producing and the replenishment of process parameter.
Above-mentioned curvometer is gathered injection pressure, position, speed data, is delivered to screen display three curve maps through communication interface.
The data characteristics of above-mentioned 6 characteristic values is the performance that has reflected die casting machine, the condition of die casting molding; Conclude injection at a slow speed and discharged the gas in the injection chamber; Avoid feed liquid to be involved in gas, the overall process of injections such as accurate position when filling die cavity at a high speed and workpiece feeding raising density.
The present invention compared with prior art has following beneficial effect:
Can extract 6 characteristic values in the injection process automatically and show that can show pressure, three curves of position and speed make things convenient for the scene to check the influence of technological parameter to product quality.When the deviation between actual injection characteristic value (currency) and the standard feature value surpasses the permissible variation of setting, produce the quality alarm signal, alert or technologist carry out deep quality examination to current die casting workpiece.The introducing that quality is reported to the police makes the operator needn't often be concerned about that the variation of injection technological parameter more pays close attention to and produce with product quality, has improved production efficiency and product quality, make die casting produce more accurately with efficiently.
The objective of the invention is to propose a kind of current data state, through relatively producing the detection method that quality is reported to the police with standard value to 6 characteristic values of reflection technological parameter in the die casting machine injection process.This method is very helpful to the adjustment and the raising die casting workpiece quality of extrusion process, can effectively avoid causing substandard products in enormous quantities to produce because of the variation of injection technological parameter.
The present invention consider the die casting workpiece except that mould, material, temperature etc. to its quality influential; The stability of die casting machine itself and extrusion process set and injection process in abnormal conditions etc. be maximum to the quality influence of die casting workpiece; And its randomness is very strong, is not easy control.The present invention has realized a kind of automatic judging method of die casting workpiece quality through collection, calculating and comparison of statistics to 6 characteristic values of die casting machine.6 characteristic values of die casting machine are through being installed in pressure sensor and the injection position probing read head on the injection oil cylinder, and in curvometer, curvometer can be set the sampling time, and pressure and position data are converted into 6 characteristic values with pressure and placement data acquisition.The characteristic value that injection is each time extracted all compares the scope of overshoot, then output alarm signal with normal data.Advantage of the present invention is to judge the difference of injection each time and standard setting automatically, analyzes the degree of die casting workpiece pressurized casting machine itself and real-time effects of process parameters, thereby judges the influence of extrusion process to workpiece quality, reminds operating personnel to improve.
Description of drawings
Fig. 1 is the automatic decision flowchart of quality of the present invention.
Fig. 2 is the display screen interface state reference map.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Referring to Fig. 1-Fig. 2, this die casting machine comprises the injection oil cylinder that is provided with pressure sensor and injection position probing read head, and its pressure sensor is connected with curvometer with injection position probing read head; Curvometer is electrically connected with warning device and display screen, and is not shown.
The automatic judging method of die casting workpiece quality; Comprise in the die casting machine injection process injection speed at a slow speed, fast injection speed, change position, maximum speed, maximum pressure, supercharging these 6 characteristic values Time Created fast at a slow speed; Its current data that detects 6 characteristic values comprises following steps: the first step, setting curve appearance are obtained standard value, acquisition time, deviate, the product sampling observation rate of sampling time, characteristic value; In second step,, gather injection pressure and injection position data in the injection process through using curvometer and pressure, position sensor; In the 3rd step, calculate the injection speed data in the injection process by the injection position data in the injection process; In the 4th step, from the pressure of injection process, speed, position data, extract the currency of 6 characteristic values through calculating; The 5th step compared the currency of 6 characteristic values and the standard value of characteristic value one by one, judged whether to exceed deviate; If meet deviate, continue injection, and returned for second step and continue to detect; If exceed deviate, then represent die casting workpiece non-conformity of quality standardization.
The standard value of above-mentioned characteristic value is to obtain through curvometer; When the technologist adjusts parameter; And after confirming that the die casting workpiece satisfies quality requirements, extract the characteristic value of 6 standards, according to the quality requirement of die casting workpiece; Through the setting screen deviate or the sampling observation rate of display screen, foundation as a comparison.
Above-mentioned currency and standard value compare, and when exceeding deviate, send quality through warning device and report to the police.
The currency that above-mentioned accumulative total is stored characteristic value in the injection process forms database, is that curve obtains the probability distribution data with the method that adopts statistics through screen display, is used for instructing producing and the replenishment of process parameter.
Above-mentioned curvometer is gathered injection pressure, position, speed data, is delivered to screen display three curve maps through communication interface.
Claims (5)
1. the automatic judging method of the die casting workpiece quality of a die casting machine, said die casting machine comprises the injection oil cylinder that is provided with pressure sensor and injection position probing read head, pressure sensor is connected with curvometer with injection position probing read head; Said curvometer is electrically connected with warning device and display screen; It is characterized in that comprising in the die casting machine injection process injection speed at a slow speed, fast injection speed, change position, maximum speed, maximum pressure, supercharging these 6 characteristic values Time Created fast at a slow speed, its current data that detects 6 characteristic values comprises following steps:
The first step, setting curve appearance are obtained standard value, acquisition time, deviate, the product sampling observation rate of sampling time, characteristic value;
In second step,, gather injection pressure and injection position data in the injection process through using curvometer and pressure, position sensor;
In the 3rd step, calculate the injection speed data in the injection process by the injection position data in the injection process;
In the 4th step, from the pressure of injection process, speed, position data, extract the currency of 6 characteristic values through calculating;
The 5th step compared the currency of 6 characteristic values and the standard value of characteristic value one by one, judged whether to exceed deviate; If meet deviate, continue injection, and returned for second step and continue to detect; If exceed deviate, then represent die casting workpiece non-conformity of quality standardization.
2. according to the automatic judging method of the die casting workpiece quality of the said die casting machine of claim 1; The standard value that it is characterized in that said characteristic value is to obtain through curvometer, when the technologist adjusts parameter, and after confirming that the die casting workpiece satisfies quality requirements; Extract the characteristic value of 6 standards; According to the quality requirement of die casting workpiece, through the setting screen deviate or the sampling observation rate of display screen, foundation as a comparison.
3. according to the automatic judging method of the die casting workpiece quality of the said die casting machine of claim 2, it is characterized in that currency and standard value compare, when exceeding deviate, send quality through warning device and report to the police.
4. according to the automatic judging method of the die casting workpiece quality of the said die casting machine of claim 3; It is characterized in that adding up to store the currency formation database of characteristic value in the injection process; Through screen display is that curve obtains the probability distribution data with the method that adopts statistics, is used for instructing producing and the replenishment of process parameter.
5. according to the automatic judging method of the die casting workpiece quality of the said die casting machine of claim 4, it is characterized in that curvometer gathers injection pressure, position, speed data, be delivered to screen display three curve maps through communication interface.
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| CN102364512A (en) * | 2011-10-11 | 2012-02-29 | 中华人民共和国宁波出入境检验检疫局 | Method for realizing automatically sampling inspection of computer during product inspection and quarantine |
| CN108072401A (en) * | 2016-11-14 | 2018-05-25 | 山东理工大学 | A kind of press force energy parametric measurement device and method |
| CN107891016A (en) * | 2017-11-29 | 2018-04-10 | 德盛镁汽车部件（芜湖）有限公司 | With curvometer and automatically the defective products separation system and its method for separating monitored |
| CN109108255A (en) * | 2018-08-17 | 2019-01-01 | 宁波海天金属成型设备有限公司 | Intelligent die casting control system and its control method |
| CN110059738A (en) * | 2019-04-11 | 2019-07-26 | 清华大学深圳研究生院 | A kind of method for early warning and system of quality of die casting |
| CN111795721A (en) * | 2020-06-04 | 2020-10-20 | 成都飞机工业（集团）有限责任公司 | Real-time online detection method for autoclave curing data |
| CN111940700B (en) * | 2020-07-10 | 2022-05-31 | 深圳领威科技有限公司 | Die casting machine control method and device, electronic equipment and storage medium |
| CN113953484B (en) * | 2021-09-15 | 2023-04-25 | 宁波保税区海天智胜金属成型设备有限公司 | Air injection protection control system and control method for die casting equipment |
| CN114309524A (en) * | 2021-11-26 | 2022-04-12 | 深圳南科强正轻合金技术有限公司 | On-line monitoring system and method for quality of semi-solid slurry |
| CN114632922B (en) * | 2022-02-15 | 2022-11-29 | 湖南大学 | High-efficiency high-quality aluminum alloy damping tower high-pressure vacuum die-casting process control system and method |
| CN114295365B (en) * | 2022-03-09 | 2022-07-08 | 深圳市信润富联数字科技有限公司 | Method, system, equipment and storage medium for monitoring pin inserting machine precision abnormity |
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| CN1727095A (en) * | 2005-05-30 | 2006-02-01 | 上海压铸机厂 | Computer measurement and control system for die-casting machine |
| CN201147836Y (en) * | 2007-12-17 | 2008-11-12 | 胡文振 | Filling detection device of die casting machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH03189060A (en) * | 1989-12-19 | 1991-08-19 | Toshiba Mach Co Ltd | Monitoring instrument for gas venting condition in die casting machine |
| JPH07205243A (en) * | 1994-01-13 | 1995-08-08 | Sumitomo Heavy Ind Ltd | Apparatus for method for deciding propriety of molded form of injection molding machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3189060B2 (en) * | 1991-11-27 | 2001-07-16 | 九州日立マクセル株式会社 | Pattern expression method |
| CN1727095A (en) * | 2005-05-30 | 2006-02-01 | 上海压铸机厂 | Computer measurement and control system for die-casting machine |
| CN201147836Y (en) * | 2007-12-17 | 2008-11-12 | 胡文振 | Filling detection device of die casting machine |
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Address after: 528300 Guangdong province Foshan city Shunde high tech Zone (Ronggui) No. 22 Keyuan Road three Patentee after: Yizhimi Co.,Ltd. Address before: 528300 Guangdong province Foshan city Shunde high tech Zone (Ronggui) No. 22 Keyuan Road three Patentee before: GUANGDONG YIZUMI PRECISION MACHINERY Co.,Ltd. |
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